Good morning. I inherited from my grandfather a couple of  Norfolk and Western Class J locomotives that came in the yellow collectors edition boxes. I believe they were manufactured in the early 80's. I put them on my test track, only to have the light come on, but no movement. I don't really want to chance opening them up, as I am mechanically uninclined when it comes to steam locomotives. My question is would it be worth sending them into Bachmann to possibly get a diagnosis and repair, or are they just too old and obsolete? I'd like to see them running for my grandfather's sake, but if not, they'd be wall displays. Thanks in advance.